CV90 disc seal triode. Note, the camera lens does distort this slightly but the base really is warped like that!
Designed for use as a local oscillator in a double concentric co-axial line, this valve could operate up to 3GHz, and generated 4W output at 1GHz. It was replaced by the smaller CV273.
| Heater voltage | 6.3V |
| Heater current | 600mA approx |
| Max anode voltage | 350V |
| Max anode dissipation | 10W |
| Ampification factor | 35 |
| Mutual conductance (Va=250, Ia=25mA) | 5.0mA/V |
| Capacitances | |
| Cag | 1.9pF |
| Cac | 0.065pF |
| Cgc | 2.25pF |
